Portable spraying apparatus



Nov. 1, 1960 H. EMMERICH 2,958,155

PORTABLE SPRAYING APPARATUS Filed Dec. 28, 1955 Heinz nm g7 )yM/MINVENTOR Unite I 2,958,155 Ice Patented Nov. 1, 1960 PORTABLE SPRAYINGAPPARATUS Heinz Emmerich, Stuttgart, Germany, assignor to FirmaKleinmotoren G.m.b.H., Maichingen, Germany Filed Dec. 28, 1955, ser. 1%.555,959 Claims priority, application Germany Dec. 28, 1954 1'11 Claims.(Cl. 43-148 The present invention relates to a portable sprayingapparatus and more particularly to a portable spraying apparatus forspraying insecticides. J p

One object of the present invention to provide a spraying apparatus inwhich a large output is combined with low weight. g p 7 It is a furtherobject of the present invention to arrange the essential elements of thespraying apparatus that is the motor, the blower, the container for thematerial to be sprayed and any other necessary container on a support toform a compact overall unit. I v

An additional object of the present invention is to arrange the blowerof the unit in relationship to the motor in such a way that the airsucked in by the blowers serves at the same time to cool the motor. I t

It is yet a further object of the present invention to form the supportfor carrying the apparatus in such a way that the apparatus can becarried conveniently on the back of the user, and be also safely placedon the ground.

It is another object of the present invention to form the support insuch a way that all moving parts of the apparatus are protected. a I

It is yet a further object of the present invention to arrange thecontainers carried on the support in such a way that they can be removedeasily and be exchanged against diflfcrent containers.

With the above objects in view the present invention mainly consists ina portable spraying apparatus comprising, in combination, a support,drive means mounted on the support, the drive means including a driveshaft, a blower mounted on the support on ,one side of the drive meansand including a driven shaft transversely spaced from the drive shaft,transmission means connecting the drive shaft with the driven shaft forrotating the latter, a closed container carried by the support adjacentthe drive means on the other side thereof and adapted to contain asubstance to be sprayed, conduit means connecting the blower with thecontainer for increasing the air pressure in the latter, and sprayingmeans connected to the container for spraying the substance.

The drive means for the spraying apparatus are preferably in the form ofan internal combustion engine having an air-cooled cylinder and thesuction opening of the blower is arranged in relation to this air-cooledcylinder in such a way that the air sucked into the blower cools thecylinder of the engine.

Preferably the apparatus includes besides a container adapted to containthe substance to be sprayed at least one additional container for thefuel of the motor and these containers are preferably arranged inabutting relationship and in line with each other on the top of thesupport and are preferably releasably fastened to the support, so thatthe container containing the substance to be sprayed may conveniently bechanged against another container. When the apparatus is used for thespraying of insecticides, the unit is preferably provided with twoexchangeable containers of substantially identi cal shape. One of thecontainers is adapted to contain a liquid insecticide to be sprayedwhereas the other container is used during spraying of a powderymaterial. The latter container is preferably formed with a funnelshapedinsert receiving the insecticide powder and an agitating'mechanismlocated in the narrow end of the fnnn el-shaped insert is provided. Inthis case transmission means are further provided to dgive the agitatingmechanism from the drive shaft of the motor. These transmission meansare preferably disconnectable to facilitate the exchange of onecontainer for the other.

The novel features which are considered as characteristic fof theinvention are set forth particular in the appended clair'ns. Theinvention itself, however, both as to its construction and its method ofoperation, together with additional objects and advantages thereof, willbe best understood ffom the following description of specificembodiments when read in connection with the accompanying drawings, inwhich: I V

Fig. l is a front view of a portablespraying apparatus according to thepresent invention, provided with a container for spraying a liquidsubstance;

Fig. 2 is a side view of the apparatus illustrated in Fig. 1;

Fig. 3 is a partial front view of a modification of the apparatusshowing-.1 container adapted to contain a powdery substance; I a I Fig.4 is a side view of the modification shown in Fig. 3 parts broken awayto show the agitating mechanism in the container; v

Fig. 5 is a cross-section takenalong the lines 5-'5 of Fig. 2 in thedirection of the arrows; v

Fig. 6 is a partly sectional view showing a modification of thecontainer shown in Fig. 1; and

Fig. 7 is a side view similar to Fig. 2 but showing the opposite side ofthe apparatus.

Referring now to the drawings and more particularly to Figs. 1 and 2 ofthe same, it will be seen that the portable spraying apparatus isprovided with a tubular U-sliaped framemember 1 forming part of thesupport structure of the apparatus. Frame member 1 has a base portinn 1'and an upright portion 1" projecting from one side of the base portionsubstantially normal to the same. A bracket 2 is fastened in anysuitable way, for instance by welding, to the base portion 1 to enlargethe base portion and to stiffen the frame at its lower end. Two supportbrackets 3 are respectively inserted'into the upper open ends of theU-shaped tubular frame member 1 and fastened to the upper ends of theframe member. Thesupport brackets 3 are connected by a cross-member 4which stiffens the upper end of the U-shaped frame member. Atrough-shaped hood member 5 is attachedto the members 2 and 4. Dampeningmembers 6 consisting of a resilient material are preferably arrangedbetween. the hood member 5 and the frame member 1 or between the hood 5and the two members 2 and 4, respectively. Located outwardly of thetrough-shaped hood member 5 and fastened thereto are drive means, shownas a small internal combustion engine having a crank case 7 and an aircooled cylinder 8. The engine shaft carries on one end a starter wheel9. Fastened to the crank case 7 is a carrying handle 10. A muffler 11 isconnected to one side' of the em gine and a'carburetor 12 to its otherside. The shaft of the motor extends into the hood member 5 and carrieskeyed to -its end a large pulley 13 which drives over a V-belt 14 asmall pulley 1'3 keyed to the shaft of the blower -15 Thereby blower 15is driven at a greater speed than the speed of the shaft of thecombustion'engine. Instead of using a V-belt transmission 14, 13, 13'

adapted to contain a powdery material.

'air stream sucked in by the blower cools at the same time the cylinder8 of the motor.

F as-tened to the support bracket 3 are releasable fastening means whichcomprise retaining straps 17 which are at one end thereof fixedlyattached to the support brackets 3 and on the other end releasablyattached to the support brackets 3 by releasable quick-acting connectingmeans 18. Carried by the support brackets 3 is a closed container 19,which, in the preferred form illustratedin the drawings, is ofcylindrical shape. Arranged next to the container 19 is a secondcontainer 20, which, in the preferred form shown in the drawings, isalso of cylindrical shape and has a cross-section equal to thecross-section of the container 19. The containers 19 and 20 are arrangedin abutting relationship and the abutting faces of the two containersare located under one of the retaining straps 17. To hold the two endfaces of the containers securely against each other, the end faces areeach provided with an annular rim 17' projecting beyond the cylindricalsurfaces of the containers, and the retaining strap 17 has a grooveengagingthe annular rims 17 of the two abutting containers. Each of thecontainers 19 and 21 is provided with filling openings which arerespectively closed by closure caps 21 and 22.

The portion of the container 19 extending on the right side (as seen inFig. 1) beyond the retaining strap 17 may also be formed as a separatecontainer 20' as shown in Fig. 6. Such a container would be used forcarrying water, tools or any other necessary materials.

The apparatus of the present invention is especially used for sprayinginsecticides, which may be in the form of a liquid or in the form of apowder. In order to adapt the spraying apparatus to any of these twotypes of materials, the container 19 adapted to contain aliquid materialcan be easily exchanged for a container A container 19' for powderymaterial is illustrated in the Figs. 3 and 4. Container 19 shown in Fig.3 has the same basic cylindrical shape as the container 19 shown in Fig.1 and is provided with a funnel-shaped insert 23 which is tightly closedon its upper end by a cover member 28. An agitating mechanism 29 isprovided on the narrow end of the funnel-shaped insert 23 to facilitatethe flow of the powdery material. To drive the agitating mechanism 29transmission means are provided connecting the drive shaft of the motorwith the agitating mechanism 29. These transmission means comprise gearmeans 30 which may be in the form of a worm and worm gear or in the formof bevel gears. The gear means 30 are connected to the agitating means29 by a flexible shaft 31. A releasable coupling 32 is further providedso that the flexible shaft 31 may be disconnected from the gear means 30whenever the container 19' is exchanged for a container 19.

A tubular conduit means 24 leading from the blower into the containers19 or into the funnel-shaped insert of container 19', respectively, isprovided for increasing the air pressure in the containers. an exchangeof the containers possible, the upper end of the tube 24 is releasablyconnected to the container.

To make A second conduit means 25 leads from the inside of the container19 or from the funnel-shaped insert of container 19' to the sprayingnozzle 40 which is fastened to the end of the spray pipe 26. Conduitmeans 25, spray pipe 26 and the spraying nozzle 40 form the sprayingmeans of the apparatus. The conta ner serving to btnatlon, a support; aninternal combustion engine having 4 contain the fuel for the motor isconnected by means of a conduit means 27 to the carburetor 12 of themotor.

For the convenience of the user, the apparatus is provided with abackrest, comprising a cushion 33 fastened to the two upright legs 1" ofthe U-shaped frame member 1 by means of fastening bolts 34. To preventexcessive curving of the'cushion, a support base is also provided whichconsists of flexible non-yielding material, for instance of steel bands35. Steel bands 35 extend between the upright legs 1" of the framemember 1 and are fastened thereto by the bolts 34. Cushion 33 ispreferably releasably fastened to the bolts34. and straps 36 areprovided for this purpose, as shown in Fig. 5. Straps 36 are formed witheyelets which can be snapped over the rounded ends of the bolts 34. Theapparatus is carried on the back by means of carrying straps 37. Onlythe upper ends which are fixedly secured to the support frame 1 areshown in the drawings and the lower ends of these carrying straps 34 aresecured to the bottom of the carrying frame in any suitable releasablemanner.

The portable spraying apparatus as described will operate as follows:

The combustion engine of the machine is started preferably with theapparatus resting on the ground on the support base 1 and on thestiffening member 2. The blower is rotated at a speed higher than thespeed of the shaft of motor and compressed air is supplied throughtaining the material to be sprayed. The air sucked in by the blowercools at the same time the cylinder 8 0f the engine. The material to besprayed leaves the container through the conduit 25 and is sprayed bythe spraying nozzle 40 located at the end of the spray pipe 26. Thenecessary fuel for driving the motor is supplied to the carburetor 12 ofthe same through the conduit 27 connecting the carburetor 12 with thefuel tank 20. If it is desired to spray an object with powderyinsecticide, the container 19 is removed from the support frame 1 byreleasing the fastening means 17 and by exchanging the container 19 forthe container 19 which contains powdery substance. The agitatingmechanism 29 located in the funnel-shaped insert 23 of the container 19'is operated by means of the flexible shaft 31 connected to the gearmeanson the shaft of the drive motor by the coupling 32.

It will be understood that each of the elements described above, or twoor more together, may also find a useful application in other types ofportable spraying apparatuses differing from the types described above.

way from the spirit of the present invention.

7 Without further analysis, the foregoing will so fully reveal the gistof the present invention that others can by applyingcurrent knowledgereadily adapt it for various applications without omitting featuresthat, from the standpoint of prior art, fairly constitute essentialcharacteristics of the generic or specific aspects of this inventionand, therefore, such adaptations should and are intended to becomprehended within the meaning and range of equivalence of thefollowing claims.

What is claimed as new and desired to be secured by Letters Patent is: i

1. A portable spraying apparatus comprising, in coman air cooledcylinder and a drive shaft and being mounted on said support; a blowermounted on said support on one side of said engine and having a drivenhaft transversely spaced from said drive shaft and a suction openinglocated adjacent to and facing said cylinder so that the air streamsucked through said suction opening into said blower cools saidcylinder; transmission means connecting said drive shaft with saiddriven shaft for rotating the latter; a closed container carried by saidsupport adjacent said engine on the other side thereof and adapted tocontain a substance to be sprayed; conduit means connecting said blowerwith said container for increasing the air pressure in the latter; andspraying means operatively connected to said container for spraying saidsubstance.

2. A portable spraying apparatus comprising, in combination, a supportincluding a frame member having a base portion and an upright portionprojecting from one side of the base portion substantially normalthereto, and a hood member attached to said upright portion; an internalcombustion engine having an air cooled cylinder and being mounted onsaid hood member substantially outside of the same, said engine havinga' drive shaft extending into said hood member; a blower mounted insidesaid hood member on one side of said engine and having a driven shafttransversely spaced from and parallel to said drive shaft, said blowerhaving a suction opening located adjacent to said cylinder and said hoodmember being provided with an opening therethrough in line with saidsuction opening so that the air stream sucked into said blower coolssaid cylinder; transmission means connecting said drive shaft with saiddriven shaft for rotating the latter; a closed container carried by saidframe member adjacent said engine on the other side thereof and adaptedto contain a substance to be'sprayed;--conduit means connecting saidblower with said container for increasing the air pressure in thelatter; and spraying means operatively connected to said container forspraying said substance.

3. A portable spraying apparatus comprising, in combination, a supportincluding a frame member having a base portion and an upright portionprojecting from one side of the base portion substantially normalthereto, and a hood member attached to said upright portion; an internalcombustion engine having a crank case and an air cooled cylinderextending from said crank case toward said base portion of said framemember andbeing mounted on said hood member substantially outside of thesame, said engine having a drive shaft extending into said hood member;a blower mounted inside said hood member between said engine andsaid'base portion and having a driven shaft transversely spaced from andparallel to said drive shaft, said blower being provided with a suctionopening located adjacent to said cylinder and said hood member beingformed with an'opening there'- through in line with said suction openingso'thatthe air stream sucked into said blower cools saidcylinder;transmission means connecting said drive shaft with said driven shaftfor rotating the latter; a closed container mounted on the free end ofsaid upright portion 'of said frame member opposite the base portionthereof and adapted to contain a substance to be sprayed; conduit meansconnecting said blower with said container for-increasing'the airpressure in the latter; and spraying means operatively connected to saidcontainer for spraying said substance.

4. A portable spraying apparatus comprising, in combination, a supportincluding a tubular U-shaped frame member having a base portion and anupright portion provided with two substantially parallel legs projectingfrom one side of the base portion substantially normal thereto, a backrest fastened to and extending between said two legs of said uprightportion, a pair of support brackets mounted on the free ends ofsaiduprigl'i t portion, and a hood member attached to saidupright'portion; an internal combustion engine having a crank case andan air cooled cylinder extending from said Tcr'ank case toward said baseportion of said frame member and being mounted on said hood membersubstantially outside of the same, said engine having a 'drive shafteiitending into said hood member; a blower mounted inside said hoodmember between said engine and said base portion and having a drivenshaft transversely spaced from and parallel to said drive shaft, saidblower being provided with a suction opening located adjacent to saidcylinder and said hood member being formed with an opening therethroughin line with said suction opening so that the air stream sucked intosaid blower cools said cylinder; transmission means connecting saiddrive shaft with said driven shaft for rotating the latter; a closedcontainer mounted on the free end of said upright portion of said framemember opposite the base portion thereof carried by said supportbrackets and adapted to contain a substance to be sprayed; conduit meansconnecting said blower with said container for increasing the airpressure in the latter; and spraying means operatively connected to saidcontainer for spraying said substance.

5. A portable spraying apparatus comprising, in combination, a supportincluding a tubular U-shaped frame member having a base portion and anupright portion provided with two substantially parallel legs projectingfrom one side of the base portion substantially normal thereto, abackrest fastened to and extending between said two legs of said uprightportion, a pair of support brackets mounted on the free ends of saidupright portion and a hood member attached tosaid upright portion; aninternal combustion engine having a crank case and an ail-cooledcylinder extending from said crank case toward said base'portion' ofsaid frame member and being mounted on said hood member substantiallyoutside of the same, said engine having a drive shaft extending intosaid hood member; a blower mounted inside said hood member between saidengine and said base portion and having a driven shaft transverselyspaced from and parallel to said drive shaft, said blower being providedwith a suction opening located adjacent tosaid cylinder and said hoodmember being formed with an opening therethrough in line with saidsuction opening so that the air stream sucked into said blower coolssaid cylinder; transmission means connecting said drive shaft withsaid'driven shaft for rotating the latter; a first closed cylindricalcontainer adapted to contain a substance to be sprayed; a second closedcylindrical container adapted to contain the fuel for said engine, saidtwo containers mounted coaxial with each other in end to endrelationship on said support brackets; releasable fastening means forreleasably fastening said containers to said support brackets; conduitmeans connecting said blower with said first container for increasingthe air pressure in the latter; conduit means connecting said enginewith said second container; and spraying means operatively connected tosaid first container for spraying said substance.

6. A portable spraying apparatus comprising, in combination, a supportincluding a tubular U-shaped frame member having a base portion and anupright portion provided with two substantially parallel legs projectingfrom one side of the base portion substantially normal thereto, abackrest fastened to and extending between said two legs of said uprightportion, a' parrot support brackets mounted on the free ends of said upright portion and a hood member attached to said upright portion; aninternal combustion engine having a crank case and an air cooledcylinder'exte'nding from said crank case toward said base portion ofsaid frame member and being mounted on said hood member substantiallyoutside of the same, said engine having a drive shaft extending intosaid hood member; a blower mounted inside said hood member between saidengine and said base portion and having a driven shaft transverselyspaced from and parallel to said drive shaft, said blower being providedwith a suction opening located adjacent to said cylinder andsaid hoodmember being'formed'with 'anopening therethrougliin line with saidsuction'op'ening so that the air stream sucked into said blower coolssaid cylinder; transmission means connecting said drive shaft with saiddriven shaft for rotating the latter; a first closed cylindricalcontainer including a funnel-shaped insert adapted to contain a powderysubstance to be sprayed; a second closed cylindrical container adaptedto contain the fuel for said engine, said two containers mounted coaxialwith each other in close relationship on said support brackets;releasable fastening means for releasably fastening said containers tosaid support brackets; an agitating mechanism located at the narrow endof said funnel-shaped insert; transmision means operatively connected tosaid drive shaft of said engine and to said agitating mechanism fordriving the latter; conduit means connecting said blower with saidfunnelshaped insert of said first container for increasing the airpressure in the latter; conduit means connecting said engine with saidsecond container; and spraying means operatively connected to saidnarrow end of said funnelshaped insert for spraying said powderysubstance.

7. A portable spraying apparatus comprising, in combination, a supportincluding a tubular U-shaped frame member having a base portion and anupright portion provided with two substantially parallel legs projectingfrom one side of the base portion substantially normal thereto, abackrest fastened to and extending between said two legs of said uprightportion, a pair of support brackets mounted on the free ends of saidupright portion and a hood member attached to said upright portion; aninternal combustion engine having a crank case and an air cooledcylinder extending from said crank case toward said base portion of saidframe member and being mounted on said hood member substantially outsideof the same, said engine having a drive shaft extending into said hoodmember; a blower mounted inside said hood member between said engine andsaid base portion and having a driven shaft transversely spaced from andparallel to said drive shaft, said blower being provided with a suctionopening located adjacent to said cylinder and said hood member beingformed with an opening therethrough in line with said suction opening sothat the air stream sucked into said blower cools said cylinder;transmission means connecting said drive shaft with said driven shaftfor rotating the latter; a first closed cylindrical container includinga funnel-shaped insert adapted to contain a powdery substance to besprayed; a second closed cylindrical container adapted to contain thefuel for said engine, said two containers mounted coaxial with eachother in close relationship on said support brackets; releasablefastening means for releasably fastening said containers to said supportbrackets; an agitating mechanism located at the narrow end of saidfunnel-shaped insert; transmission means connecting said drive shaft ofsaid engine with said agitating mechanism for driving the latter, saidtransmission means including gear means operatively connected to saiddrive shaft, a flexible shaft connected to said agitating mechanism andreleasable coupling means connecting said gear means with said flexibleshaft so that said flexible shaft may be disconnected from said gearmeans when said first container is removed from said brackets; conduitmeans connecting said blower with said funnelshaped insert of said firstcontainer for increasing the air pressure in the latter; conduit meansconnecting said engine with said second container; and spraying meansoperatively connected to said narrow end of said funnelshaped insert forspraying said powdery substance.

8. A portable insecticide spraying apparatus comprising, in combination,a support including a tubular U- shaped frame member having a baseportion and an upright portion provided with two substantially parallellegs projecting from one side of the base portion substantially normalthereto, a backrest fastened to and extending between said two legs ofsaid upright portion,

a pair of support brackets mounted on the free ends of said uprightportion and a hood member attached to said upright portion; an internalcombustion engine having a crank case and an air cooled cylinderextending from said crank case toward said base portion of said framemember and being mounted on said hood member substantially outside ofthe same, said engine having a drive shaft extending into said hoodmember; a blower mounted inside said hood member between said engine andsaid base portion and having a driven shaft transversely spaced from andparallel to said drive shaft, said blower being provided with a suctionopening located adjacent to said cylinder and said hood member beingformed with an opening therethrough in line with said suction opening sothat the air stream sucked into said blower cools said cylinder;transmission means connecting said drive shaft with said driven shaftfor rotating the latter; a first closed container adapted to contain aliquid insecticide to be sprayed; at least one additional closedcontainer adapted to contain fuel for said engine, said containershaving substantially equal cross sections and being mounted aligned andin abutting relationship with each other on said support bracket;releasable fastening means for releasably fastening said containers tosaid support brackets whereby said first container may be exchangedagainst another container adapted to contain an insecticide powder to besprayed; conduit means connecting said blower with said first containerfor increasing the air pressure in the latter; conduit means connectingsaid engine with said one container; and spraying means operativelyconnected to said first container for spraying said substance.

9. A portable spraying apparatus comprising, in combination, a supportincluding a tubular-U-shaped frame member having a base portion and anupright portion provided with two substantially parallel legs projectingfrom one side of the base portion substantially normal thereto, abackrest fastened to and extending between said two legs of said uprightportion, a pair of support brackets mounted on the free ends of saidupright portion, and a hood member attached to said upright portion; aninternal combustion engine having a crank case and an air cooledcylinder extending from said crank case toward said base portion of saidframe member and being mounted on said hood member substantially outsideof the same, said engine having a drive shaft extending into said hoodmember; a blower mounted inside said hood member between said engine andsaid base portion and having a driven shaft transversely spaced from andparallel to said drive shaft, said blower being provided with a suctionopening located adjacent to said cylinder and said hood member beingformed with an opening therethrough in line with said suction opening sothat the air stream sucked into said blower cools said cylinder;transmission means connecting said drive shaft with said driven shaftfor rotating the latter; a first closed container adapted to contain asubstance to be sprayed; a pair of closed containers each having a crosssection substantially equal to the cross section of said first containerand being arranged in line and in abutting relationship respectively onopposite sides of said first container, one of said containers ofsaidpair of containers adapted to contain fuel for said engine, theabutting faces of said containers being each formed with an annular rimprojecting beyond said faces; releasable fastening means comprising apair of retaining straps attached respectively at one end fixedly and onthe other end by releasable quick-acting connecting means to saidsupport brackets and being tightly wound about said rims of saidcontainers, respectively, for releasably fastening said containers tosaid support brackets; conduit means connecting said blower with saidfirst container for increasing the air pressure in the latter; conduitmeans connecting said engine with said one container; and spraying meansoperatively connected to said first container for spraying saidsubstance.

10. A portable spraying apparatus as defined in claim 4, wherein saidbackrest comprises a support base being formed from flexiblenon-yielding material and being fastened to and extending between thetwo legs of said upright portion; and a cushion abutting against saidsupport base and fastened to said two legs.

11. A portable spraying apparatus comprising, in combination, supportmeans including a tubular U-shaped frame member having a base portionand an upright portion provided with two substantially parallel legsprojecting from one side of the base portion substantially normalthereto, a back rest fastened to and extending between said two legs ofsaid upright portions, a hood member fastened to the upright portion ofsaid frame member, and a pair of support brackets mounted on the freeends of said upright portion; drive means mounted on said hood membersubstantially outside the same and having a drive shaft extending intosaid hood member; a blower mounted inside said hood member spaced fromsaid back rest and having a driven shaft substantially parallel andlaterally spaced from said drive shaft; transmission means locatedinside said hood member and operatively connected to said drive meansand said blower for driving said blower by said drive means; a Closedcontainer carried by said support brackets and adapted to contain asubstance to be sprayed; conduit means connecting said blower with saidcontainer for increasing the air pressure in the latter; and sprayingmeans operatively' connected to said container for spraying saidsubstance.

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